battery park has some good opportunities and you can do it when you do the ferry, the carousel in central park, the bull just off wall st, some great cathedrals and windows, alice in wonderland in central park, met museum and the public library behind bryant park, and all the others mentioned, watch for the police driving round at the end of the shift with lights and sirens on it makes a great pic as does the lines of yellow cabs at the lights on 5th & 6th.
oh and look up some of the buildings are great.
enjoy its a great place to be